Dump-car.



T. R. Me-KNIGHT.

DUMP GAR.

APPLICATION FILED MAB.17, 1911.

Patented June 3,1913.

3 SHEETSSHEET 1.

T. R. MQKNIGH'T.

DUMP CAR.

, APPLICATION FILED MAR. 17, 1911. I 1,063,276.. PatentedJun'e 3, 1913.

3 SHEETS-SHEET 2.

T. R. MGKN IGHT. DUMP GAR. APPLICATION FILED MAR.17,'1911.

Patented Jun 3, 1913.

3SHEETS-SHEET 3.

' Jl063,276. I

' m @M@ mf so;

VFIEIO'IIVIAS :e. CKNIGHT," Omani-301m, ILLINoIs, ASSIGNQR'TO WESTERN WHEELQDD i SCRAPER ooMPAi Y-, or AURORA, ELLINOIS, A CORPORATION OF ILLINOIS.

Specification of Letters Patent.

Patented June 3-, iei's.

"Application file'd Maich 17, 191-1. serial-'mLmsgoez.

To ZZZ fwh'om'i't may concern Be it known that I, THOMAS R. Mo- Kmen'r, a citizen. of "the Unite'clStates, 1"esiding at A 11'1'ora,in't he county of K'ane and State of Illinois have invented *crtaih new and useful Improven ehts' in DilihpC-ars, of WillClI the following is a specification, reference being had. to the accoihpanying dra W- ings. t p

My invention -reiat'es to chimp cars, and has more espeolailyto do with stich carsof the type shown arid *des'crihfe'tl in Letters Patent of the United States, No 920,616, graiited to me May t,- l909, inwh ich th'e car bed or box is mounted torock transversely so as to dischargc'itsloatl atonesidedf the train. Usually such. cars are airanged to (lump at either side of the train, ,b itthis is not essential to my present invention. In the construction described intmy said )ateiit the lateral tilting of the 'cahbed is e edited by compressed 'air opetatihg in cylinders carried bythe car and siipplied with air from train-pipes 'controlletl by an"en'ginee1"s valve in the cab the arrangementbeingsuch th'at by' admitting air toone ofthe cylinders one-sitie-of the car'b'e'd is pulled doiv'nso as to' 'tilt it to discharge its loathand by adn1it--* ting air to the other cylinder, Whichoperates fmecha'iiism connected with the opposite side ofthe cat, the caiib'ed 'i'srighted or restoftifto its normal or operative position.

T11'e;eoihpressed air cylinders 'refe'r'red' to are prbvidedftvith pistons and piston-mas, by thQIECl'PX'GCatlOD of which-cables are operated whlch riih over certain pulleys and are .eeiineet'ed to the sides of the car such manner thatmovemefit o fthe piston in one direct-ion pulls down on one side of the car whilegre'vet'se movemeiit ofthe piston pays out the cables and permits-the car -to be rightetlby the action of the piston connected With'the other side of the car. The admissidn of compressed to either cylinder from its train-pipe is controlled by a valve which is normally open but is automatically closed to shufiofl the sup ly dfcdlhpres'sed air when the car bed has *been dumped, and is again automatically opened "when the car bed is iest'orelt'o its normal position,- or during the righting movement-.

tion and o erationare fufly desor'ibedin my said patent.

My pi-"esent inventioii resides more partict larly in improved means' for o ening and This construe closingtheiihlet valve so that such ir'ieh'a nisiii Wlll loe'm'ade practically fool proof attel'ition ohth'e'pai't of thefope'r'ator regardie'ss ofthe dire'ctioh in which 'the pistoin moves I accomplish thisolijetzt"asilltistifCtGCl iii the drawings and as h'efe'ii'iafter described.

claims. a

In the accompanying diaiyings-Fig'u'ie l is a partial .side elevation (if a dilfiip car embodying my improvements; F 1g, 2 is an eiila-rgedd'etailof apart-of the valve-Opel atiii'g mechanism; 'Fig. 3 is aplan View of .thepait's shown in Fig 2, somepa'rts being in section; Fig. 4 is a view similar to that shown in Fig. Q shUWing a diflefe'ht posiiilu'sti-aitinag the action "of the hiech'a'riism HQ Rferringto the di'avvings,'6 indi'cates'a part ofthe draft-rigging, when cairies bed so that it'mayfock'latei'ally,

9'1nd1'cates one of the cylinders by which are employedior actuating mechanism 'co'ndescribed in hiysaiiifdtefit'.

T0 indicates 'a'p'i'pei supply, as a train-pipe equippedf tvith an engineers valve by which compressed air m'a'ybe supplied to or exhausted from said tram-pipe,

theadmissioii of compressed air to 'the'cyl- :ifider 9 from the traih-p'ip'e.

provided Witha leve'f orefafik 12, *by the operation of which the valve is 'epefieii or closed.

p'i's't'dn'moving in the cylinder 9 -saiifl pistonrojcleiitendihg longitudih allyof the ear aii'ii being connected with a slid'efb'loc'k l4 'i'noving between-suita le guides 15- -I6.

y 7 'i ndica'tes a cable connected with the slide lilodk 14-ahcl extending around p'iill'eys 1'8' 19itofthe poirit of its 'co'nnetioh with one side fof the car at 20. 2 l-indicatesj'aliother cable also connected with the slide- Uloc k 1 1 and extending around pulle s '22;

23 2? to the point of its connection "with ahii isb'o'unclto operate 'cor'rcctly Wit-hoiit' "What I regard as-new is set forth in the a standards 7 ivhich'pivotaily, support the 'car Said valve is tion thereof; ancl Fig. 5 is a simil'a'ryievv t eadilig tothe cylin'der r 9 from asuitable setir'ceof'compressedair iill'iridi'cates-ah inlet Valve far 'eontiol'ling 13 'iiidicates'apisttih-iiofl coiinc teii with a the car bed to its normal positiom Fur the side of the car at 25, as shownin Fig. 1. The several pulleys are mounted in suitable fixed supports and the, arrangement is such that whenthc slide-block 14 moves to the left, as illustrated in Fig. l, the cables 17 21 are taken up 5nd the side of the car to which they are connected is pulled down.

The illustrationin'Fig. 1 shows the car bed as being tilted away from the observer .to dump at the opposite side of the train,

and consequently movement of the slideblock -14 to the left will operate to restore ther movement of the slide-block in the same 3 direction ,will tilt the car to dump'the load on the near side of the train. Movement of the piston 13 to the left is effected by admitting compressed air to the cylinder 9 11 being normally open.

through valvell, and this is accomplished by the engineer-who admits air to the trainpipe connected with the pipe 10, the valve When the car bed is being righted, it is stopped when it reaches its normal, or hori zontal position by fastening the usual staychains on the dumping side ofthe car, and after ithas been righted the 'staychains on both sides of thecar are secured. It will be understood further that when the car bed is to be dumped the stay-chains at the side opposite the dumping side are released so as to leave the car .bed free to tilt in the proper direction. T

When the car bed has been dumped, it will be apparent that as it 'is righted by admission of compressed air to the cylinder connected with the opposite side thereof, it is necessary to shut ofi the supply of comv pressed air from the dumping cylinder in order that the air inthe cylinder connected with the oppositeside may be effective to right it, and this is accomplished automatically in the construction, shown by mecha:

' nism which will now be described.

26' indicates a rod connected at one end with the lever 12 and at the other end with a movable member in the form of a slide block 27 mounted on an inverted U-shaped guide 28 which is suitably secured in position adjacent'to the path of the piston-rod 13,..as best shown in 'Fig; 3. Said slide-block. 27 is adapted to move upon said guide 28 i from one end thereof to the other, as illustrated in Figs. 2 and 4, and is provided at its opposite end portions with oppositely-' disposed pivoted members or s'to'ps 2930 in v which runs upon oft-he several parts when the. form of bell-crank levers, each having an arm 31 which normally extends horizontally and an arm-32 which normally extends vertically,the arm.31 having a roller 33 Zinc guide 28. The position of the stops 29- 0 when the slide-block 27 occupies an intermediate posit-ion upon the guide 28 is shown in Fig.

5, and the position the slide-block 27 is at either end of its movement is shown in Figs. 2 and"4, respectively. The fingers 32. of the stops 29 30 roject up into the path of a roller B t-carried by the slide-blocks 14, as best shown in Figs. 2 and 3, the function of said stops being, when properly engaged to move with the piston 13 in one direction by said roller. For example, assuming that the parts are in the position shown in Fig. 2

and consequently movement of the piston 13 and slide-block 14: will cause the slide-block ment of the parts is such that thevalve 11 will be completely closed when the stop-30 reaches the lefthand end of the guide 28,

the slide block 27 further. because said etc 30 will then rock about its pivot'35 into the position shown in Fig. 4:, thereby causing its finger 32 to move out of engagement with the roller 34. At this time the stop .29 will occupythe position shown in Fig 1 and its finger 32 will be in roller 34 upon reverse movement of the piston, andwill act to move the rod- 26 and valve lever 12 in the opposite directionand so open the valve; thus movement of the piscally -to appropriately open or close the valve 11. It will be observed that. the construction of the valve-operating mechanism is such that it is bound to operate correctly even if the slide-191001927 is out of the position which it I occupy, because the member or stop 29 is slide-block 14. would simply rock the stop 'Fig. 5, and s0 pass over it without damage and without moving the sliderblock27 until arm 32 of stop 29. This feature of providl is the improvement which forms the subject;

or theother so astooperat'e the valve 11, but I to be ineffective when improperly engaged when further mojvement'of the piston in the same direction will be inefiective to'move position to engage the moved by hand should properly capable of being operatively engaged by- 30 in the manner shown in dotted lines in by said roller 34, to cause the slide-block 27 I and that the piston-13 is moving to the-left, the finger 32 of the stop-30 at that time projects up into the path of the roller 35 '27 to move. to the left also, and will consequently closethe valve 11. The adjust-' ton in either direction operates automati would do no harm, as movement of the i the roller 34 should come in contact with the ing a safe automatic valve-operatingdevice matter of this application. So far as I am I aware, it is broadl newin a single-acting,

- as wellas a doub e-acting device, and the claims hereinafter made are therefore to be construed accordingly.

That which I claim as my invention, and

desire to secure by Letters Patent, is,

1. In a dum.pcar having a compressed-aircylinder, a valve for admitting air thereto,

and a pistonmoving in said cylinder, the

nism for rocking the car bed, of means operatively engaged by said piston-operated mechanism when the samemoves in one direction for moving said? valve in one direction, said piston-operated mechanism being arranged to pass said valve-moving means without operation thereof when moving in the-other direction.

2. In a dump-car having a compressed-- air cylinder, a valve for admit-ting air there to, and a piston moving in said cyli'nder,t'he combination with piston operated mech anism for rocking the car bed, of a movable member, means connecting saidmemberwith said valve for operating the same, and means pivotally carried by said member and intermittently coacting with said piston-operated mechanism for operating the valve.-

3. In a dump-car having a compressedair cylinder, a valve for. admitting air thereto, and a piston moving in said cylinder, the combination with piston-operated mechanism for rocking the car bed, of a reciprocatingmember, means connecting said memher with said valve for operating the same,

and means pivotally carried by said member and intermittently coacti-ng with said ,piston-operated mechanism for operating the valve. I v v 4. In a dump-car having a compressed-air cylinder, a valve for admittingair thereto, and a piston moving in said cylinder, the

, combination with piston-operated mechanism for rocking the car bed, of valve operating mechanism connected with said valve and actuated byrsaid piston-operated mechanism when the latter is moved in one Qdirec tion, said. piston-operated mechanism being movable independently f said valve-oper- "atin'g mechanism in th' pposite direction.

' 5. In a" dump-car ha g a compressed-air cylinder, a valve for admitting air thereto,

I and a piston moving in said cylinder, the

combination with piston-operated mecha nism for rocking the car bed, of a reciproeating member connected with said valve,

.and a pivoted stop carried by said member and adapted to be engaged by said pistonoperated' mechanism, said stop having means for limiting the extent to which it may rock in one direction.

6I In a dump-car having a compressedair cylinder, a valve for admitting air thereto, andazpisto'n moving in said cylinder, the

combination with piston-operated mechanism for rocking thexcar bed, of a reciprocating member connected with-said valve, and a pivoted stop carried: by said member and adapted to be engaged by said pistonoperated mechanism for moving said member,-sa id' stop comprising an arm arranged at an-angle thereto, and a guide cooperating with said arm for controlling the position of said step. combination with piston-operated mech-a- 7 In a dump-car hav ng a compressed-air cylinder, a valve for admitting air thereto,

land-a piston moving in said cylinder, the

combination with piston-operated mechanism for rocking the car bed, of a, reciproeating member connected with said valve, a

, to be engaged byisaidpiston-o-perated mechanism for moving said member, and a U-shaped guide cotiperatm-g with sa d stop for controlling the position thereof.-

9. In a dump-car having a compressed-air cylinder, a valve for admittingair thereto, and a piston movingin said cylinder, the combination with piston-operated mechanism forrocking the car bed, of amovable member connected with said valve for operating the same, and oppositely-acting stops carried by said member and coacting with said piston-operated mechanism when the same is moved in one direction or the other for opening or closing said valve.

10. In a dump-car having. a compressed 'air cylinder, a valve for admitting air there to, and a piston moving in said; cylinder, the combination 'with. piston-operated mechanism for rocking the car bed of a movable member connected with said valve for operating the same, and oppositely-disposed stops pivotally mounted upon said member to swing in opposite directions, and coacting with said piston-operated. mechanism when moved in one direction or the other for opening or closing said valve.

11. In a dumpecar having a compressedair cylinder, a valve for admitting air thereto, anda piston moving in said cylinder, the

combination with piston-operated mecha nism for rocking the car bed, of a movable member. connected with said valve for operating the same, and oppositely-disposed bell-crank levers pivotally mounted upon crank levers pivotally mounted upon said member to swing in opposite directions, and coacting with said piston-operated mech'a nism when moved in one direction or the otherfor opening or closing said valve, and a guide for controlling the movement of said bell-crank levers.

13. In a dump-car having a compressed air cylinder, a valve for admitting air thereto, and a piston moving in said cylinder,.the combination with piston-operated mechanism for rockingtl1e car bed, of a movable member connected with said valve for operating the same, oppositely disposed bellcrank levers pivotally mounted upon said member to swing in opposite directions, and

"coacting with said piston-operated mechanismwhen moved in one direction orthe other for opening or closing said valve, and an inverted U-shaped guide for controlling the movement of said bell-cra'nk-levers.

14. In a dump-car, the combination with fluid-pi'essure-operated mechanism for rocking the car bed, and a valve for controlling -the operation thereof, of valve-operating means comprising a member capable of being operatlvely engaged by said fiu1d -pressure-operated mechanism -when the latter moves 'in one direction, said member being incapable of being operatively engaged by said fluid pressure operated mechanism when the latter moves in the opposite direction. Y

15. In a dump-car, the combination'with fluid-pressure-operated'mechanism for rocking the'car bed, and a valve for controlling the operation thereof,- of valve-operating means comprising ia-member capable of being operatively engaged by said fluid-pres- Sure-operated mechanism when the latter moves in one direction and being automatically disengaged therefrom under excessive movement of said fiuid-pressure-operated mechanism in the same direction, said member'being incapable .of being operatively engaged by said fluid-pressure-operated mechanism when the latter moves in the opposite direction.

16, In a dump-car, the combinationwith fluid-pressure-operated mechanism for rockingthe car bed, and a valve for controlling the operation thereof, of a valve-operating device comprising a plurality of members, vone of said members being capable of being operatively engaged by said fluid-pressureoperated mechanism by movement thereof in one direction only, and the other of said members being capable of being operatively engaged by said fluid pressure operated mechanism bymovement thereof in the opposite direction only.

17. In a dump-car, the combinat-ion with fluid-pressure-operated mechanism for rocking the car bed, and a valve for controlling theoperation thereof, of a valve-operating device comprising a plurality of members, one ofsaid members being capable of being operatively engaged by said fluid-pressureoperated mechanism by movement thereof in one direction onlyand being inoperative under excess1ve movement in the. same direction ofthe fiuid-pressure-operated mechanism, and the other of said members being capable of being operati-vely engaged by said fluidpressure operated mechanismby movement thereof in the-opposite direction only and being inoperative u nder excessive movement in such direction of the fluid-pressureoperated mechanism.

- Witnesses:

D. HAMPER',

THOMAS- R. MOKNIGHT'. 

